ljharb

Array Iteration

https://gist.github.com/ljharb/58faf1cfcb4e6808f74aae4ef7944cff

While attempting to explain JavaScript's reduce method on arrays, conceptually, I came up with the following - hopefully it's helpful; happy to tweak it if anyone has suggestions.

Intro

JavaScript Arrays have lots of built in methods on their prototype. Some of them mutate - ie, they change the underlying array in-place. Luckily, most of them do not - they instead return an entirely distinct array. Since arrays are conceptually a contiguous list of items, it helps code clarity and maintainability a lot to be able to operate on them in a "functional" way. (I'll also insist on referring to an array as a "list" - although in some languages, List is a native data type, in JS and this post, I'm referring to the concept. Everywhere I use the word "list" you can assume I'm talking about a JS Array) This means, to perform a single operation on the list as a whole ("atomically"), and to return a new list - thus making it mu

wincent

2015-01-29 Unofficial Relay FAQ

Compilation of questions and answers about Relay from React.js Conf.

Disclaimer: I work on Relay at Facebook. Relay is a complex system on which we're iterating aggressively. I'll do my best here to provide accurate, useful answers, but the details are subject to change. I may also be wrong. Feedback and additional questions are welcome.

What is Relay?

Relay is a new framework from Facebook that provides data-fetching functionality for React applications. It was announced at React.js Conf (January 2015).

dhoelzgen

class API::V1::BaseController < ApplicationController

  skip_before_filter :verify_authenticity_token

  before_filter :cors_preflight_check
  after_filter :cors_set_access_control_headers

  def cors_set_access_control_headers
    headers['Access-Control-Allow-Origin'] = '*'
    headers['Access-Control-Allow-Methods'] = 'POST, GET, PUT, DELETE, OPTIONS'

jsteiner

RSpec.configure do |config|
  config.before(:suite) do
    DatabaseCleaner.clean_with(:truncation)
  end

  config.before(:each) do
    DatabaseCleaner.strategy = :transaction
  end

  config.before(:each, js: true) do

JamesDullaghan

Deploy Rails app to digitalocean with nginx, unicorn, capistrano & postgres

Create droplet of your liking (ubuntu 12.10 x32)

ssh to root in terminal with your server ip

ssh root@123.123.123.123

Add ssh fingerprint and enter password provided in email

stevenwanderski

// SASS variable overrides must be declared before loading up Active Admin's styles.
//
// To view the variables that Active Admin provides, take a look at
// `app/assets/stylesheets/active_admin/mixins/_variables.css.scss` in the
// Active Admin source.
//
// For example, to change the sidebar width:
// $sidebar-width: 242px;

// Active Admin's got SASS!

welingtonsampaio

##
# Fazendo deploy com o capistrano de uma aplicação Rails
# usando servidores da Amazon ec2 e unicorn como servidor
# o versionamento do ruby no ambiente de produção foi feito
# com o rbenv ( https://github.com/sstephenson/rbenv ), o SO
# esta com o Centos 5.3 x64
#
# Primeiramente é necessario instalar a gem com o comando:
# gem install capistrano
# ou adicione a linha: gem "capistrano", :group => :development

everaldo

### Esse gist ainda não está 100%

aparentemente tem que fazer um gem install passenger **também**

sudo apt-get install python-software-properties ### PARA INSTALAR add-apt-repository, se não tiver no sistema
sudo apt-get install software-properties-common ### NO UBUNTU 13.04

sudo add-apt-repository ppa:nginx/stable ### PARA INSTALAR SOMENTE NGINX, SEM PASSENGER - USE SOMENTE COM PHP
sudo add-apt-repository --remove ppa:nginx/stable ### PARA REMOVER NGINX, SEM PASSANGER - USE SOMENTE SE TIVER INSTALADO
sudo add-apt-repository ppa:brightbox/passenger-nginx ### PARA INSTALAR VERSAO RECENTE DO NGINX COM PASSENGER

wrburgess

##References

• ActiveAdmin Home
• Heroku Backups
• Heroku Dev/Prod Environments

##Create Rails App

command to make new directory:

mkdir AppName

samqiu

#!/usr/bin/ruby
require 'rss'

# Usage
# $ ./railscasts.rb http://railscasts.com/subscriptions/YOURRAILSCASTRSS/\/
#     episodes.rss
# OR
# $ ./railscasts.rb

p 'Downloading rss index'